第13章 數值估算
Quiz
•
Mathematics
•
7th Grade
•
Practice Problem
•
Hard
Mathematics CCASS
Used 1+ times
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8 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
3.14 (準確至三位小數)
3.141 (準確至四有效數字)
3.1416 (準確至五有效數字)
3.14159 (準確至六位小數)
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
0.044 549 2=
0.04 (準確至二位有效數字)
0.045 (準確至三位小數)
0.044 54 (準確至四位有效數字)
0.044 549 (準確至五位小數)
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
0.098 764 3 =
0.098 (準確至四位小數)
0.0987 (準確至四位小數)
0.098 76 (準確至四位有效數字)
0.098 77 (準確至四位有效數字)
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
0.020 898 98 =
0.020 89 (準確至六位小數)
0.020 898 (準確至六位小數)
0.020 899 (準確至六位有效數字)
0.020 899 0 (準確至六位有效數字)
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
把一個數捨入至三位有效數字後,所得的值是0.0500。該數可能是
0.0499。
0.049 94。
0.049 995。
0.050 05。
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
把一個數捨入至N位有效數字,所得的結果是320 000。下列何者不是N的可能值?
1
2
3
4
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
一打雞蛋的售價是$21.3。穎琦在購買3.5打雞蛋時用了估算計算需付的總金額,理由是
可以簡化計算。
售價隨時間改變。
售價是未知量。
不能求得需付金額的真確值。
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